JP2003022258A - Backup system for server - Google Patents
Backup system for serverInfo
- Publication number
- JP2003022258A JP2003022258A JP2001205038A JP2001205038A JP2003022258A JP 2003022258 A JP2003022258 A JP 2003022258A JP 2001205038 A JP2001205038 A JP 2001205038A JP 2001205038 A JP2001205038 A JP 2001205038A JP 2003022258 A JP2003022258 A JP 2003022258A
- Authority
- JP
- Japan
- Prior art keywords
- server device
- server
- web
- function
- abnormality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複数台のサーバー
装置で構成され、機能的に分散してサービスを提供する
サーバーの運転を、相互にバックアップする機能を備え
たサーバーのバックアップシステムに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a server backup system having a function of backing up operations of servers which are composed of a plurality of server devices and which are functionally distributed to provide services. is there.
【０００２】[0002]
【従来の技術】従来、コンピュータシステムとして、継
続運用を必要としない場合は、単にファイルのバックア
ップを取っておく等の方法が取られていたが、リストア
の作業は人手に頼るところが大きく、一旦壊れてしまう
と大きな人的コストが必要であった。2. Description of the Related Art Conventionally, as a computer system, when continuous operation is not required, a method such as simply making a backup of files has been used, but restoration work often relies on manpower and is once broken. If it ends up, a large human cost is required.
【０００３】また、インターネットサーバーに着目する
と、Ｗｅｂ、メール、ＦＴＰ（ファイル伝送）等のサー
ビス提供があるが、このように継続運用を必要とする場
合は、故障に備えて同等の機能を持ったサーバーを用意
しておき、異常が発見された場合に直ちに置き換えるよ
うなホットスタンバイと称される方法や、同等の機能を
持ったサーバーを複数並列的に動作させ、異常が発見さ
れた場合に、それを取り除くなどの方法が取られてい
た。[0003] Focusing on the Internet server, there are services such as Web, mail, and FTP (file transmission). When continuous operation is required in this way, it has an equivalent function in case of failure. Prepare a server and replace it immediately when an abnormality is found A method called hot standby, or if multiple servers with equivalent functions are operated in parallel and an abnormality is found, Methods such as removing it were taken.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、中小規
模のオフィスでは、せいぜい定期的にデータのバックア
ップを取る程度で、同等のシステムを常に用意して運用
できるように構成するには、コスト的にもスペース的に
も難しいという問題がある。However, in small and medium-sized offices, it is costly to construct an equivalent system so that it can be prepared and operated only by regularly backing up data at best. There is a problem that it is difficult in terms of space.
【０００５】以上のような問題を解決するために本発明
では、複数のコンピュータシステムとして分散可能な各
サーバー機能を複数台のサーバー装置に役割分担させる
と共に、他のサーバー装置が故障してもサーバー機能を
継続運用できるように、個々のサーバー装置には本来担
う機能の他に、他のサーバー装置に備わるサーバー機能
を保有して補完運転を可能にし、人的、コスト的負担を
抑えたサーバーのバックアップシステムを提供すること
を目的とする。In order to solve the above problems, according to the present invention, each server function that can be distributed as a plurality of computer systems is assigned to a plurality of server devices, and even if another server device fails, In addition to the functions that each server device originally has so that the functions can be continuously operated, the server functions that other server devices have are provided to enable complementary operation, and the server that reduces the human and cost burden The purpose is to provide a backup system.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に記載の発明は、通信ネットワークに接続
され、利用者の要求に応答してサービスを提供する複数
台のサーバー装置で構成されたクライアント・サーバー
システムであって、前記複数台のサーバー装置につい
て、それぞれのサーバー装置の異常を認知する手段と、
この異常を認知した際に、当該サーバー装置に割り当て
た役割機能を、他の正常なサーバー装置に代行させるた
めの補完手段とを備えていることを特徴とする。このこ
とにより、サービスを停止しないための多重化の機能を
果たすと共に、運転コストを低くして、通常、少ない数
のサーバー装置で広範囲のサービスを提供し、異常時
に、正常なサーバー装置で役割機能を補完することがで
きる。また、役割機能について、同等扱いのサーバー装
置を用意した場合に比べ、通常時、１台当たりの処理能
力を小さくでき、また、ホットスタンバイに比べて、サ
ーバー装置の遊びと設置スペースの拡張を抑えたサーバ
ー装置の効率的な利用を行うことができる。さらに、異
常認知手段について、それぞれのサーバー装置に割り当
てられた役割機能が与えるシステム負荷の大小に応じ
て、異常認知手段を実施するサーバー装置を選択するこ
とができる。In order to achieve the above object, the invention according to claim 1 comprises a plurality of server devices connected to a communication network and providing a service in response to a user's request. And a means for recognizing an abnormality of each of the plurality of server devices,
When this abnormality is recognized, it is characterized by including a complementing means for substituting the role function assigned to the server device for another normal server device. As a result, the function of multiplexing is performed to prevent the service from being stopped, the operating cost is reduced, and a wide range of services are normally provided by a small number of server devices. Can be complemented. In addition, with regard to the role function, the processing capacity per unit can be reduced under normal conditions compared to the case where equivalently treated server devices are prepared. Also, compared to hot standby, server device play and installation space expansion are suppressed. It is possible to use the server device efficiently. Further, regarding the abnormality recognition means, it is possible to select the server device that implements the abnormality recognition means according to the magnitude of the system load given by the role function assigned to each server device.
【０００７】請求項２に記載の発明は、前記サーバー装
置は、それぞれ、サーバーシステムに於けるサービスの
役割分担に対応する基本役割機能と、他のサーバー装置
の役割分担に対応する他の役割機能とを備えており、こ
れにより、通常は、基本役割機能で実行され、前記異常
認知手段によりサーバー装置の異常を認知した際には、
その補完機能として、他の役割機能を並行して実行する
ように、前記補完手段が構成されていることを特徴とす
る。このことにより、バックアップサーバーとなったサ
ーバー装置は、本来の役割機能である基本役割機能と、
異常を認知されたサーバー装置の他の役割機能とを並行
して実行することができる。According to a second aspect of the present invention, each of the server devices has a basic role function corresponding to the role allotment of services in the server system, and another role function corresponding to the role allotment of another server device. With this, normally, when the abnormality is recognized in the server device by the abnormality recognition means executed by the basic role function,
As the complementing function, the complementing unit is configured to execute other role functions in parallel. As a result, the server device that became the backup server has the basic role function, which is the original role function,
It is possible to execute in parallel with other role functions of the server device which has been recognized as abnormal.
【０００８】請求項３に記載の発明は、前記補完手段
は、その対応するサーバー装置および／あるいは補完対
象である他のサーバー装置について、その異常を認知し
た際に、異常のサーバー装置の基本役割機能を停止する
と共に、正常のサーバー装置の補完機能を実行するよう
に構成されていることを特徴とする。このことにより、
それぞれのサーバー装置で実施される異常認知手段と補
完手段が連携して、基本役割機能の停止と補完機能の実
行を制御することができる。According to a third aspect of the present invention, the complementing means, when recognizing an abnormality in the corresponding server device and / or another server device to be complemented, the basic role of the abnormal server device. It is characterized in that it is configured to stop the function and execute the complementary function of the normal server device. By this,
The abnormality recognition means and the complementing means implemented in the respective server devices cooperate with each other to control the stop of the basic role function and the execution of the complementing function.
【０００９】請求項４に記載の発明は、補完対象である
サーバー装置は、補完機能を実行するために必要なデー
タを保有し、予め定められたコピー条件を満たした際
に、対応する基本役割機能を備えたサーバー装置から補
完対象であるサーバー装置に前記データをコピーするよ
うに構成されていることを特徴とする。このことによ
り、基本役割機能と対応する補完機能を備えるサーバー
装置間に於いて、基本役割機能を実行するために必要な
データと、対応する補完機能を実行するためのデータと
の整合性は保つことができる。According to a fourth aspect of the invention, the server device to be complemented holds the data required to execute the complementary function, and when the predetermined copy condition is satisfied, the corresponding basic role is fulfilled. It is characterized in that the data is copied from a server device having a function to a server device to be complemented. As a result, between the server devices equipped with the basic role function and the complementary function corresponding to each other, the data necessary for executing the basic role function and the data for executing the corresponding complementary function are kept consistent. be able to.
【００１０】請求項５に記載の発明は、異常を認知され
たサーバー装置について、その正常復帰を認知する手段
と、正常復帰を認知した際に、その補完機能を実行する
サーバー装置の補完機能を停止すると共に、正常復帰し
たサーバー装置の基本役割機能を実行するための復帰手
段を備えることを特徴とする。このことにより、それぞ
れのサーバー装置で実施される正常復帰認知手段と復帰
手段が連携して、補完機能の停止と基本役割機能の実行
を制御することができる。According to a fifth aspect of the present invention, with respect to a server device recognized to be abnormal, a means for recognizing the normal return and a complementary function of the server device for executing the complementary function when recognizing the normal return are provided. It is characterized in that it is provided with a restoring means for executing the basic role function of the server device which has stopped and has returned to the normal state. As a result, the normal return recognition means and the return means implemented in the respective server devices can cooperate to control the stop of the complementary function and the execution of the basic role function.
【００１１】[0011]
【発明の実施の形態】次に、本発明にかかるサーバーの
バックアップシステムの、実施の形態の具体例を、図に
基づいて説明する。図１は本実施の形態におけるサーバ
ーのバックアップシステムの構成を示す概略図である。BEST MODE FOR CARRYING OUT THE INVENTION Next, a specific example of an embodiment of a backup system for a server according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of a server backup system according to the present embodiment.
【００１２】図１に示すように、サーバーのバックアッ
プシステム１００は、ＬＡＮ同士を相互に接続するため
のルーター３を介してインターネット４に接続され、利
用者が保有する利用者端末装置５からの要求に応答し
て、サーバー装置に割り当てた機能を分担してサービス
を提供する、２台のサーバー装置で構成されたクライア
ント・サーバーシステムである。As shown in FIG. 1, the server backup system 100 is connected to the Internet 4 via a router 3 for connecting LANs to each other, and requests from a user terminal device 5 owned by a user. In response to the request, the client / server system is configured by two server devices that share the functions assigned to the server devices and provide services.
【００１３】２台のサーバー装置は、基本役割機能であ
る、Ｗｅｂシステム１０を備えたＷｅｂサーバー装置１
と、電子メールシステム３０を備えたメールサーバー装
置２とから構成され、メールサーバー装置２は、Ｗｅｂ
システム１０の補完機能であるＷｅｂ補完システム４０
を備え、Ｗｅｂサーバー装置１は、電子メールシステム
３０の補完機能である電子メール補完システム２０を備
える。The two server devices are the web server device 1 having the web system 10, which is a basic role function.
And a mail server device 2 having an electronic mail system 30. The mail server device 2 is a web server.
Web complement system 40, which is the complement function of system 10.
In addition, the Web server device 1 includes an electronic mail complement system 20 which is a complementary function of the electronic mail system 30.
【００１４】次に、Ｗｅｂサーバー装置１が、Ｗｅｂサ
ーバー装置１自身の動作を異常認知手段により確認し
（Ｓ５）、異常を認知した際には、補完手段として（Ｓ
６〜Ｓ１０）、Ｗｅｂサーバー装置１が担う本来の基本
役割機能としてのＷｅｂシステム１０の役割を停止する
（Ｓ６）と共に、メールサーバー装置２に備わるＷｅｂ
補完システム４０の役割を補完機能として実行する（Ｓ
７〜Ｓ１０）処理手順について詳細に説明する。図２は
本発明の異常認知手段と補完手段が連携したバックアッ
プシステムの処理の流れ図である。Next, the Web server device 1 confirms the operation of the Web server device 1 itself by means of the abnormality recognition means (S5).
6 to S10), the role of the Web system 10 as the original basic role function of the Web server device 1 is stopped (S6), and the Web provided in the mail server device 2
The role of the complementary system 40 is executed as a complementary function (S
7 to S10) The processing procedure will be described in detail. FIG. 2 is a flow chart of processing of the backup system in which the abnormality recognizing means and the complementing means of the present invention cooperate with each other.
【００１５】図２で示すＷｅｂシステム起動（Ｓ１）、
Ｗｅｂシステム運用（Ｓ２）、変更指示データ送信（Ｓ
３）、Ｗｅｂサーバー装置監視（Ｓ５）、Ｗｅｂシステ
ム終了（Ｓ６）、Ｗｅｂ補完システム起動指示送信（Ｓ
７）は、Ｗｅｂサーバー装置１が備えるＷｅｂシステム
１０の処理であり、変更指示データ受信・変更（Ｓ
４）、Ｗｅｂ補完システム起動指示受信（Ｓ８）、Ｗｅ
ｂ補完システム起動（Ｓ９）、Ｗｅｂ補完システム運用
（Ｓ１０）は、メールサーバー装置２が備えるＷｅｂ補
完システム４０の処理である。Starting the Web system shown in FIG. 2 (S1),
Web system operation (S2), change instruction data transmission (S
3), Web server device monitoring (S5), Web system termination (S6), Web supplement system start instruction transmission (S)
7) is a process of the Web system 10 included in the Web server device 1, which is to receive / change the change instruction data (S
4), Web supplement system start instruction reception (S8), We
The b complement system activation (S9) and the Web complement system operation (S10) are processes of the Web complement system 40 included in the mail server device 2.
【００１６】以下に処理手順を詳細に説明する。
（１）Ｗｅｂシステム起動（Ｓ１）
Ｗｅｂサーバー装置１が担う本来の機能としてのＷｅｂ
システム１０を起動する。
（２）Ｗｅｂシステム運用（Ｓ２）
Ｗｅｂサーバー装置１で運用されるＷｅｂシステム１０
の運用開始に伴い、Ｗｅｂシステム１０が備えるデータ
ファイルへの登録または変更データを対象に、メールサ
ーバー装置２のＷｅｂ補完システム４０が備えるデータ
を変更するための変更指示データと、Ｗｅｂサーバー装
置１にインストールしたＯＳのメッセージロギング機能
が出力したＯＳの運用メッセージとアプリケーションプ
ログラムの処理結果の状態を示す運用メッセージとを出
力する。
（３）変更指示データ送信（Ｓ３）
予め、Ｗｅｂシステム１０が稼働するために必要とする
システム環境定義、アプリケーションプログラム、デー
タなどをＷｅｂ補完システム４０へコピーして、両者の
整合性を取れた状態にする。この処理では、Ｗｅｂサー
バー装置１から出力された変更指示データのみをメール
サーバー装置２へ送信する。
（４）変更指示データ受信・変更（Ｓ４）
Ｗｅｂサーバー装置１から送信した変更指示データによ
り、メールサーバー装置２のＷｅｂ補完システム４０が
備えるデータを変更する。
（５）Ｗｅｂサーバー装置監視（Ｓ５）
Ｗｅｂサーバー装置１から出力された運用メッセージ
が、異常を示す運用メッセージであるかどうかを、運用
メッセージのエラー内容を検査することにより、Ｗｅｂ
サーバー装置１で運用されているＷｅｂシステム１０の
運転状態を監視する。
（６）Ｗｅｂシステム終了（Ｓ６）
（Ｓ２）の処理で出力した運用メッセージが、異常を示
す運用メッセージの場合は、Ｗｅｂサーバー装置１で運
用されているＷｅｂシステム１０の運用を終了する。
（７）Ｗｅｂ補完システム起動指示送信（Ｓ７）
メールサーバー装置２に備わる補完機能であるＷｅｂ補
完システム４０を起動する指示を、Ｗｅｂサーバー装置
１からメールサーバー装置２へ送信する。
（８）Ｗｅｂ補完システム起動指示受信（Ｓ８）
Ｗｅｂサーバー装置１から送信したＷｅｂ補完システム
４０を起動する指示を受信する。
（９）Ｗｅｂ補完システム起動（Ｓ９）
Ｗｅｂサーバー装置１のＷｅｂシステム１０よりメール
サーバー装置２のＷｅｂ補完システム４０を起動する前
に、Ｗｅｂ補完システム４０が使用するサーバー名やデ
ータベース名などに、システム環境の変更が発生する場
合は、Ｗｅｂ補完システム４０のシステム環境ファイル
の変更を行う。メールサーバー装置２のＷｅｂ補完シス
テム４０を起動する。
（１０）Ｗｅｂ補完システム運用（Ｓ１０）
メールサーバー装置２でのＷｅｂ補完システム４０の運
用を開始する。The processing procedure will be described in detail below. (1) Web system start (S1) Web as the original function of the Web server device 1
Start the system 10. (2) Web system operation (S2) Web system 10 operated by the Web server device 1
With the start of the operation of, the change instruction data for changing the data included in the Web supplement system 40 of the mail server device 2 and the registration or change data in the data file included in the Web system 10 and the Web server device 1 The operating message of the OS output by the message logging function of the installed OS and the operating message indicating the status of the processing result of the application program are output. (3) Change instruction data transmission (S3) A state in which the system environment definitions, application programs, data, etc., required for the Web system 10 to operate are copied to the Web supplement system 40 in advance so that the two are consistent with each other. To In this process, only the change instruction data output from the Web server device 1 is transmitted to the mail server device 2. (4) Receiving / Modifying Change Instruction Data (S4) The change instruction data transmitted from the Web server apparatus 1 changes the data included in the Web supplement system 40 of the mail server apparatus 2. (5) Web server device monitoring (S5) Whether the operation message output from the Web server device 1 is an operation message indicating an abnormality is checked by checking the error content of the operation message,
The operating state of the Web system 10 operated by the server device 1 is monitored. (6) Web System End (S6) If the operation message output in the process of (S2) is an operation message indicating an abnormality, the operation of the Web system 10 operated by the Web server device 1 is ended. (7) Web supplement system start instruction transmission (S7) The web server device 1 transmits to the mail server device 2 an instruction to activate the web complement system 40, which is a complement function of the mail server device 2. (8) Receiving Web Supplement System Activation Instruction (S8) The instruction to activate the Web supplement system 40 transmitted from the Web server device 1 is received. (9) Web Completion System Start (S9) Before starting the Web complement system 40 of the mail server device 2 from the Web system 10 of the Web server device 1, the system name is changed to the server name or database name used by the Web complement system 40. When the environment is changed, the system environment file of the web supplement system 40 is changed. The web supplement system 40 of the mail server device 2 is activated. (10) Web Supplement System Operation (S10) The operation of the web supplement system 40 in the mail server device 2 is started.
【００１７】次に、補完機能を実行するメールサーバー
装置２が、異常を認知されたＷｅｂサーバー装置１の動
作を正常復帰認知手段により確認し（Ｓ１５）、正常動
作を認知した際には、復帰手段として（Ｓ１６〜Ｓ２
０）、メールサーバー装置２に備わる補完機能としての
Ｗｅｂ補完システム４０の役割を停止する（Ｓ１６）と
共に、Ｗｅｂサーバー装置１が担う本来の基本役割機能
としてのＷｅｂシステム１０の役割を実行する（Ｓ１
９、Ｓ２０）処理手順について詳細に説明する。図３は
本発明の正常復帰認知手段と復帰手段が連携したバック
アップシステムの処理の流れ図である。Next, the mail server device 2 which executes the complementary function confirms the operation of the Web server device 1 which has been recognized to be abnormal by the normal recovery recognition means (S15), and when it recognizes the normal operation, it recovers. As a means (S16-S2
0), the role of the Web supplement system 40 as a complementary function provided in the mail server device 2 is stopped (S16), and the role of the Web system 10 as the original basic role function of the Web server device 1 is executed (S1).
9, S20) The processing procedure will be described in detail. FIG. 3 is a flow chart of processing of the backup system in which the normal recovery recognition means and the recovery means of the present invention cooperate with each other.
【００１８】図３で示すＷｅｂシステムリカバリー（Ｓ
１３）、Ｗｅｂシステムリカバリー終了通知送信（Ｓ１
４）、Ｗｅｂ補完システム終了通知受信（Ｓ１８）、Ｗ
ｅｂシステム起動（Ｓ１９）、Ｗｅｂシステム運用（Ｓ
２０）は、Ｗｅｂサーバー装置１が備えるＷｅｂシステ
ム１０の処理であり、Ｗｅｂ補完システム起動（Ｓ１
１）、Ｗｅｂ補完システム運用（Ｓ１２）、Ｗｅｂシス
テムリカバリー終了通知受信（Ｓ１５）、Ｗｅｂ補完シ
ステム終了（Ｓ１６）、Ｗｅｂ補完システム終了通知送
信（Ｓ１７）は、メールサーバー装置２が備えるＷｅｂ
補完システム４０の処理である。Web system recovery (S
13), Web system recovery end notification transmission (S1
4), Web completion system end notification reception (S18), W
eb system startup (S19), Web system operation (S
20) is a process of the web system 10 included in the web server device 1, and the web supplement system activation (S1)
1), Web supplement system operation (S12), Web system recovery end notification reception (S15), Web supplement system end (S16), Web supplement system end notification transmission (S17)
This is the process of the complementary system 40.
【００１９】以下に処理手順を詳細に説明する。
（１）Ｗｅｂ補完システム起動（Ｓ１１）
（Ｓ６）の処理でＷｅｂサーバー装置１のＷｅｂシステ
ム１０の運用が終了して、（Ｓ８）のＷｅｂ補完システ
ム起動指示により、メールサーバー装置２に備わる補完
機能であるＷｅｂ補完システム４０を起動する。
（２）Ｗｅｂ補完システム運用（Ｓ１２）
メールサーバー装置２のＷｅｂ補完システム４０の運用
を開始する。
（３）Ｗｅｂシステムリカバリー（Ｓ１３）
（Ｓ５）の処理で監視した異常を示す運用メッセージの
発生原因を取り除き、（Ｓ１２）の処理でＷｅｂ補完シ
ステム４０から出力する変更指示データにより、Ｗｅｂ
サーバー装置１のＷｅｂシステム１０が備えるデータを
リカバリーする。
（４）Ｗｅｂシステムリカバリー終了通知送信（Ｓ１
４）
Ｗｅｂシステム１０のリカバリーが終了した通知をＷｅ
ｂサーバー装置１からメールサーバー装置２に送信す
る。
（５）Ｗｅｂシステムリカバリー終了通知受信（Ｓ１
５）
Ｗｅｂサーバー装置１からのＷｅｂシステム１０のリカ
バリーが終了した通知を受信する。
（６）Ｗｅｂ補完システム終了（Ｓ１６）
Ｗｅｂシステム１０のリカバリー終了通知の受信に伴
い、Ｗｅｂ補完システム４０の運用を終了する。
（７）Ｗｅｂ補完システム終了通知送信（Ｓ１７）
Ｗｅｂ補完システム４０の運用を終了した通知をメール
サーバー装置２からＷｅｂサーバー装置１へ送信する。
（８）Ｗｅｂ補完システム終了通知受信（Ｓ１８）
メールサーバー装置２からＷｅｂ補完システム４０の運
用を終了した通知を受信する。
（９）Ｗｅｂシステム起動（Ｓ１９）
Ｗｅｂサーバー装置１が担う本来の基本役割機能として
のＷｅｂシステム１０を再起動する。
（１０）Ｗｅｂシステム運用（Ｓ２０）
Ｗｅｂサーバー装置１によるＷｅｂシステム１０の運用
を再開する。The processing procedure will be described in detail below. (1) Web supplement system startup (S11) The operation of the web system 10 of the web server device 1 is completed by the processing of (S6), and the supplement function provided in the mail server device 2 by the web supplement system startup instruction of (S8). Then, the Web supplement system 40, which is (2) Web Supplement System Operation (S12) The operation of the web supplement system 40 of the mail server device 2 is started. (3) Web system recovery (S13) The cause of the operation message indicating the abnormality monitored in the process of (S5) is removed, and the change instruction data output from the Web complementary system 40 in the process of (S12) causes the Web
The data included in the Web system 10 of the server device 1 is recovered. (4) Web system recovery end notification transmission (S1
4) We send a notification that the recovery of the Web system 10 is completed.
b Send from the server device 1 to the mail server device 2. (5) Web system recovery end notification reception (S1
5) Receive a notification from the Web server device 1 that the recovery of the Web system 10 is completed. (6) Web Completion System End (S16) Upon receipt of the recovery completion notification from the Web system 10, the operation of the Web complement system 40 ends. (7) Web Completion System End Notification Transmission (S17) The mail server apparatus 2 transmits a notification that the operation of the Web supplement system 40 has ended to the Web server apparatus 1. (8) Receiving Web Completion System Completion Notification (S18) A notification that the operation of the Web supplement system 40 has been completed is received from the mail server device 2. (9) Web system activation (S19) The Web system 10 as the original basic role function of the Web server device 1 is restarted. (10) Web system operation (S20) The operation of the Web system 10 by the Web server device 1 is restarted.
【００２０】以上、本発明の一実施の形態を詳細に説明
したが、本発明は、本実施の形態に限られるものではな
い。本発明の趣旨から逸脱しない範囲内で多様に変更実
施することが可能であり、上記の実施の形態の他に、以
下に挙げる実施例を選択してもよい。
（１）データ受け渡しの実施例
Ｗｅｂシステム１０とＷｅｂ補完システム４０のデータ
の整合性を保つために、（Ｓ３、Ｓ４）の処理に於い
て、リアルタイム処理にて変更指示データ受け渡してい
るが、システムに掛かる負荷とリカバリー時間の猶予の
両面から検討して、ディレードバッチ処理またはバッチ
処理によるデータの受け渡し方法も選択肢に加えると有
効である。Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this embodiment. Various modifications can be made without departing from the spirit of the present invention, and in addition to the above-described embodiment, the following examples may be selected. (1) Example of Data Transfer In order to maintain data consistency between the Web system 10 and the Web complementary system 40, in the processing of (S3, S4), the change instruction data is transferred in real time. It is effective to consider both the load on the system and the grace of recovery time, and add a delayed batch process or a data transfer method by batch process to the options.
【００２１】（２）異常認知手段の実施例
（Ｓ５）の処理では、Ｗｅｂサーバー装置１の基本役割
機能の運転状態をＷｅｂサーバー装置１が監視する方法
を選択しているが、この他に、Ｗｅｂサーバー装置１の
基本役割機能の運転状態をメールサーバー装置２が監視
する方法を選択してもよい。この場合は、Ｗｅｂサーバ
ー装置１から出力された運用メッセージをメールサーバ
ー装置２へ送信して、メールサーバー装置２で受信した
運用メッセージが、異常を示す運用メッセージであるか
を検査する。つぎに、受信した運用メッセージが、異常
を示す運用メッセージであれば、Ｗｅｂシステム１０の
運用を終了する指示をＷｅｂサーバー装置１へ送信し、
Ｗｅｂサーバー装置１がＷｅｂシステム１０の運用を終
了する指示を受信した後で、（Ｓ６）の処理を行う。(2) In the processing of the embodiment (S5) of the abnormality recognizing means, the method in which the Web server device 1 monitors the operating state of the basic role function of the Web server device 1 is selected. A method may be selected in which the mail server device 2 monitors the operating state of the basic role function of the web server device 1. In this case, the operation message output from the Web server device 1 is transmitted to the mail server device 2, and it is checked whether the operation message received by the mail server device 2 is an operation message indicating an abnormality. Next, if the received operation message is an operation message indicating an abnormality, an instruction to end the operation of the web system 10 is transmitted to the web server device 1,
After the web server device 1 receives the instruction to end the operation of the web system 10, the process of (S6) is performed.
【００２２】また、Ｗｅｂサーバー装置１のＷｅｂシス
テム１０の監視である異常認知手段については、（Ｓ
５）の処理では、運用メッセージのエラー内容を検査す
ることにより、Ｗｅｂシステム１０が異常であることを
認知しているが、その他の監視方法として、Ｗｅｂサー
バー装置１のＷｅｂシステム１０から一定時間毎に確認
メッセージをメールサーバー装置２へ送信し、メールサ
ーバー装置２がこの確認メッセージを受信できなかった
場合、タイムアウトとして、Ｗｅｂサーバー装置１のＷ
ｅｂシステム１０が異常であることを認知する方法も挙
げることができる。Regarding the abnormality recognition means for monitoring the web system 10 of the web server device 1, (S
In the process of 5), it is recognized that the Web system 10 is abnormal by inspecting the error content of the operation message. However, as another monitoring method, the Web system 10 of the Web server device 1 periodically checks the error. Confirmation message to the mail server device 2, and if the mail server device 2 cannot receive this confirmation message, a timeout occurs and the W server device 1
A method of recognizing that the eb system 10 is abnormal can also be mentioned.
【００２３】（３）システム環境変更の実施例
異常が認知されたサーバー装置の基本役割機能を他の正
常なサーバー装置に代行させるため、Ｗｅｂ補完システ
ム４０が使用するサーバー名やデータベース名などに、
システム環境の変更が発生する場合は、予め変更される
点を調査して、Ｗｅｂ補完システム４０のシステム環境
ファイルを一括して変更するためのシステム環境変更手
段を備えると有効である。(3) Example of system environment change In order to substitute the normal role function of the server device, which is recognized as abnormal, for another normal server device, the server name and database name used by the Web complementing system 40 are
When the system environment is changed, it is effective to provide a system environment changing means for investigating the changed points in advance and collectively changing the system environment files of the Web supplement system 40.
【００２４】[0024]
【発明の効果】以上に説明したように、本発明のサーバ
ーのバックアップシステムによれば、サービスを停止し
ないための多重化の機能を果たすと共に、運転コストを
低くして、通常、少ない数のサーバー装置で広範囲のサ
ービスを提供し、異常時に、正常なサーバー装置で役割
機能を補完することができる。As described above, according to the server backup system of the present invention, the function of multiplexing for not stopping the service is fulfilled, the operating cost is reduced, and the number of servers is usually small. The device can provide a wide range of services, and in the event of an abnormality, a normal server device can complement the role function.
【００２５】また、役割機能について、同等扱いのサー
バー装置を用意した場合に比べ、通常時、１台当たりの
処理能力を小さくでき、また、ホットスタンバイに比べ
て、サーバー装置の遊びと設置スペースの拡張を抑えた
サーバー装置の効率的な利用を行うことができる。Regarding the role function, in comparison with the case where a server device of the same treatment is prepared, the processing capacity per unit can be reduced in the normal time, and the play and installation space of the server device can be reduced as compared with the hot standby. It is possible to efficiently use the server device with reduced expansion.
【００２６】さらに、異常認知手段について、それぞれ
のサーバー装置に割り当てられた役割機能が与えるシス
テム負荷の大小に応じて、異常認知手段を実施するサー
バー装置を選択することができる。Further, with respect to the abnormality recognizing means, it is possible to select the server device which implements the abnormality recognizing means according to the magnitude of the system load given by the role function assigned to each server device.
【００２７】さらにまた、バックアップサーバーとなっ
たサーバー装置は、本来の役割機能である基本役割機能
と、異常を認知されたサーバー装置の他の役割機能とを
並行して実行することができ、この場合の他の役割機能
を実施するサーバー装置が、異常を認知されたサーバー
装置に引き続いて実施するために、これらのサーバー装
置間に於いて、基本役割機能を実行するために必要なデ
ータを、対応する補完機能を実行するためのデータへ引
き継いでいるので整合性を保つことができる。Furthermore, the server device serving as the backup server can concurrently execute the basic role function, which is the original role function, and the other role function of the server device in which the abnormality is recognized. In order for the server device performing the other role function of the case to perform the subsequent role of the server device in which the abnormality is recognized, the data necessary for performing the basic role function between these server devices, Consistency can be maintained because it is inherited to the data for executing the corresponding complementary function.
【００２８】またさらに、サーバー装置の異常発生時
に、それぞれのサーバー装置で実施される異常認知手段
と補完手段の連携により、基本役割機能の停止と補完機
能の実行を制御することができ、異常が発生したサーバ
ー装置のリカバリーの完了時に、それぞれのサーバー装
置で実施される正常復帰認知手段と復帰手段の連携によ
り、補完機能の停止と基本役割機能の実行を制御するこ
とができる。Furthermore, when an abnormality occurs in the server device, by coordinating the abnormality recognition means and the complementing means implemented in each server device, it is possible to control the stop of the basic role function and the execution of the complementing function, and the abnormality is detected. Upon completion of recovery of the generated server device, the stop of the complementary function and the execution of the basic role function can be controlled by the cooperation of the normal recovery recognition means and the recovery means implemented in each server device.
【図１】本発明の実施の形態におけるサーバーのバック
アップシステムの構成を示す概略図である。FIG. 1 is a schematic diagram showing a configuration of a backup system for a server according to an embodiment of the present invention.
【図２】本発明の異常認知手段と補完手段が連携したバ
ックアップシステムの処理の流れを示す流れ図である。FIG. 2 is a flowchart showing a processing flow of a backup system in which an abnormality recognizing means and a complementing means of the present invention cooperate with each other.
【図３】本発明の正常復帰認知手段と復帰手段が連携し
たバックアップシステムの処理の流れ図である。FIG. 3 is a flow chart of processing of a backup system in which the normal recovery recognition means and the recovery means of the present invention cooperate with each other.
１ Ｗｅｂサーバー装置 ２ メールサーバー装置 ３ ルーター ４ インターネット ５ 利用者端末装置 １０ Ｗｅｂシステム ２０ Ｗｅｂ補完システム ３０ 電子メールシステム ４０ 電子メール補完システム １００ サーバーのバックアップシステム 1 Web server device 2 Mail server device 3 routers 4 Internet 5 user terminal 10 Web system 20 Web complement system 30 e-mail system 40 E-mail completion system 100 server backup system
Claims (5)
要求に応答してサービスを提供する複数台のサーバー装
置で構成されたクライアント・サーバーシステムであっ
て、 前記複数台のサーバー装置について、それぞれのサーバ
ー装置の異常を認知する手段と、この異常を認知した際
に、当該サーバー装置に割り当てた役割機能を、他の正
常なサーバー装置に代行させるための補完手段とを備え
ていることを特徴とする、サーバーのバックアップシス
テム。1. A client-server system comprising a plurality of server devices connected to a communication network and providing a service in response to a user's request, wherein each of the plurality of server devices is a server device. It is characterized by comprising means for recognizing an abnormality of the server device and, when recognizing this abnormality, a complementing means for substituting the role function assigned to the server device for another normal server device. A server backup system.
ーシステムに於けるサービスの役割分担に対応する基本
役割機能と、他のサーバー装置の役割分担に対応する他
の役割機能とを備えており、これにより、通常は、基本
役割機能で実行され、前記異常認知手段によりサーバー
装置の異常を認知した際には、その補完機能として、他
の役割機能を並行して実行するように、前記補完手段が
構成されていることを特徴とする、請求項１に記載のサ
ーバーのバックアップシステム。2. Each of the server devices has a basic role function corresponding to the role allotment of services in the server system and another role function corresponding to the role allotment of another server device. Therefore, when the abnormality is recognized in the server device by the abnormality recognizing means, the supplementing means executes the other role functions in parallel as a complementary function. The server backup system according to claim 1, wherein the backup system is configured.
装置および／あるいは補完対象である他のサーバー装置
について、その異常を認知した際に、異常のサーバー装
置の基本役割機能を停止すると共に、正常のサーバー装
置の補完機能を実行するように構成されていることを特
徴とする、請求項１に記載のサーバーのバックアップシ
ステム。3. The supplementing means stops the basic role function of the abnormal server device when the abnormality is recognized in the corresponding server device and / or other server device to be supplemented, and the normal operation is performed. 2. The server backup system according to claim 1, wherein the server backup system is configured to execute a complementary function of the server device.
能を実行するために必要なデータを保有し、予め定めら
れたコピー条件を満たした際に、対応する基本役割機能
を備えたサーバー装置から補完対象であるサーバー装置
に前記データをコピーするように構成されていることを
特徴とする、請求項１から請求項３の何れか１項に記載
のサーバーのバックアップシステム。4. A server device to be complemented holds data required to execute the complementary function, and when a predetermined copy condition is satisfied, a server device having a corresponding basic role function is provided. 4. The server backup system according to claim 1, wherein the server backup system is configured to copy the data to a server device that is a complement target.
て、その正常復帰を認知する手段と、正常復帰を認知し
た際に、その補完機能を実行するサーバー装置の補完機
能を停止すると共に、正常復帰したサーバー装置の基本
役割機能を実行するための復帰手段を備えることを特徴
とする、請求項１から請求項４の何れか１項に記載のサ
ーバーのバックアップシステム。5. A server device, which has been recognized as abnormal, has a means for recognizing its normal recovery and, when recognizing the normal recovery, stops the complementary function of the server device and executes the complementary function, and then returns to normal. The server backup system according to any one of claims 1 to 4, further comprising: a restoring unit that executes a basic role function of the server device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001205038A JP2003022258A (en) | 2001-07-05 | 2001-07-05 | Backup system for server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001205038A JP2003022258A (en) | 2001-07-05 | 2001-07-05 | Backup system for server |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003022258A true JP2003022258A (en) | 2003-01-24 |
Family
ID=19041416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001205038A Pending JP2003022258A (en) | 2001-07-05 | 2001-07-05 | Backup system for server |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003022258A (en) |
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